Bushing extractor



` Feb. 12 1924. 1,483,818

W. E. LLOYD BUSHING EXTRAGTOR Filed Aug. 3l, 1922 figg. '12- 21 MLZZL'am E. Lgyo( W IIII SS:

PA'r

WILLIAM E. LLOYD, F LORAIN, OHIO.

BUSHING EXTRACTOR.

Application mea August 31, 1922. serial No. 585,469.

- ing bushings from machine elements.

An important and more specific object is the provision of a tool of this character which is expansible whereby to exert the necessary gripping action against the inner walls of bushings of dierent sizes.

An additional object is ,the provision of a device of this character which will be ,simple and inexpensive in manufacture, easy to operate, eilicient and durable in service and a a general improvement inthe art.

ith the above and other objects and advantages in view the invention consists 1n the details of construction to be hereinafter more fully described and claimed and il1u strated in the accompanying drawings, 1n which:

Figure 1 is a side elevation of the device,

Figure 2 is a longitudinal section showing it in use,

Figure 3 is a cross section on the. line 3-3 'of Figure 1, and

Figure 4c is across section on the line 4.-4 of F1 re 1. l

Re erring more particularly to the drawings the letter A designates a portion of a machine element withm which is a bushing -lB to be extracted. In carrying out my invention I provide an elongated shank 10 formed at one end with a head 11 and having its other end threaded as shown at 12. Slidably mounted upon this shank 1s a sleeve 13 having a conical ,he-ad 14 co-operating with a plurality of tapering externally toothed sectional jaw-s 15 which are formed with reduced extensions 16 adjacent which are grooves 17 which receive a coil spring ring 18 which acts as a fulcrum or pivot. The sleeve 13 is operated by means of a nut 19 screwed upon the threaded end of the shank.

The device further includes a cross member or brace 2O which is slidably passed over the threaded end 12 of the shank and which is designed to have blocks of wood C inserted between it and the machine element from which the bushin is to be extracted. I also provide a secondg nut 2l screwed onto the threaded end of the shank and engaging the cross member or brace 20. ln the operation of the device, the nut 19 is retracted so that the sectional toothed jaws 15 will be in contracted position. The jaw-s are then inserted into the bushing B- as shown in Fi re 2 and the nut 19 is turned down to causegtihe sleeve 13 to move longitudinally toward the head 11. The engagement of the conical head 14 with the free ends of the jaws will cause them to expand, their toothed outer portions biting into .the inner wall of the bushing and effectually gripping the same. The blocks of wood C are then laid on the machine element A, the cross member or brace 20 is slipped on to the shank and engaged upon the blocks and the nut 21 is then vapplied and turned down. This movement of the nut 21 will operate to draw the shank longitudinally, carrying with it all the associated parts and effecting extraction 0f the bushing in an obvious manner.

From the foregoing description and a, study of the. drawings it will be a parent that I have thus provided a simply constructed and consequently inexpensive tool which will be a great time and labor saver in removing bushings. Owin to the simplicity of the construction an theffewness of the parts it is apparent that there/is nothing to get out of order so that the device should have a long life and satisfactorily perform all of its functions.

While I have shown and described the preferred embodiment of the invention it is of course to be understood that ll reserve the right to make such' changes in the form, construction and arrangement of lparts as -will not depart from the spirit of the inventionl or the scope of the-subjoined claims.

Having thus described my invention I claim: f

1. A tool of the character described comprising an elongated shank terminating at one end in a head and threaded throughout its major portion, a plurality of jaws pivotled on said shank and having toothed outer faces, a sleeve slidable along the shank and terminating at one end in a conical head engaging between thefree ends of the jaws, a nut threaded onto the shank and engaging said sleeve for eifectin longitudinal movement thereof to expan the Jaws, and screw means for moving the shank lengthwise.

, taining 2. A tool of the character described comprising an elongated shank terminating at oneend ina head and threaded throughout its major portion, a plurality of jaws pivoted on said shank and having `toothed outer faces, a sleeve slidable along the shank and terminatingl at one end in a conical head engaging between the free ends of the jaws, a nut threaded onto the shank and engaging said sleeve for eecting longitudinal movement thereof to expand the jaws, and screw means for moving the shank lengthwise, consisting of a cross member slidably engaged upon the shank and adapted to rest upon supporting blocks laid upon the element conthe bushing to be extracted and a second nut screwed onto the shank and engaging said cross member.

3. A bushing extractor comprising a shank having one end threaded and its other end carrying a head, a plurality of jaws disposed against the shank and formed with -reduced extensions and grooves, the outer -faces of the jaws being toothed, a coil spring rin encircling the jaws and iitting within sai grooves 'to constitute a pivot, a

sleeve slidable on the shank and carrying a conical head engaging within the free ends of the jaws, a nut screwed on the shank and -OIle throughout its major portion, a plurality of jaws pivoted on said shank and havir if their outer surfaces curved and toothed, means slidable along the shank vand engaging said j jaws .for effecting expansion thereof and a nut member threaded onto the shank for moving said member.

5; A tool of the character described comprising an elongated shank terminating at end in av head having a concaved surface, a plurality of jaws having curved ends rockably mounted within said concaved surface, a circular spring surrounding the jaws and holding them inposition, and a wedge member movable along the shank and engageable with the jaws for expanding the same.

In testimony whereof I aiix my signature.

WILLIAM E. LLOYD. 

